Vaporizer



A. 1. RICHARDS.

vAPomzER. APPLICATION FILED FEB. I9, 1.919. RENEWED MARIIS, 1920.

1,338,393. Y PatenaApr. 27,1920.

- To all whom it may concern.'

nNIrnD sTATEs PATENT OFFICE.

ALBERT J. RICHARDS, Ior SEATTLE, WASHINGTON, AssIGNoR or ONE-HALF To A. c.

DE NIssoN, or SEATTLE, WASHINGTON.

vAPoRIzER.

Specification of Letters Patent.

Application led February 19, 1919, Serial N o. 278,104. Renewed March 13, i920. Seria1.No. 365,611.

Beit 'known that I, ALBERT J. RICHARDS, a citizen of. the'United States, residing 'at Seattle, in the 4county of King and State o fWashington, have invented a certain new and .useful Improvement in Vaporilzers, of i which the following is a specification.

My invention relates to improvements in auxiliary ,airinlet valves f0.1` internal com` bustion engines and the object of my Improvement is to provide an auxiliary air.

inlet'- valve "of a cheap and' simple form of construction that is reliable in operation A and that is adapted topbe opened'by suction produced within the pipe to which the valve is connected and to be closed by a spring disposed within the valve.'

The device isparticularlyada'pted for use on internal combustion engines and may be.

connected with the manifoldunlet pipe be-v tiveen the'carbureter and the engine in such a positionlthatI it will be opened by the suc` tion ofthe engine and will admit auxiliary air which will mix with the fuel charge just'prior to the admission of such charge to the cylinders, theeby effectingv a saving of Lfuel;'-1tendir`igv to eliminate carbon deposits inthe 'cylinders and making it possible touse lower grade fuel in the engine.

A 'further object is to providean auxiliary air inlet valve of this class having a valve controlled fuel inlet pipe connected therewithA through which liquid fuel, as gasolene, for priming or starting the engin may be introduced.

The invention consists in the novel con.

struction, adaptationand combination of parts. as will be more clearly hereinafter described and claimed.

Inl the accompanying drawings Figure 1 is a view in side elevation of an internal combustion engine showing my air inlet valve connected with the manifold thereof;

Fig. 2 is an enlarged View in longitudinal mid section of my automatic airlinlet valve as it may appear when closed, a fragment only of the manifold inlet pipe being shown; and

Fig. 3 is a view partly in cross-section and partly in elevation illustrating the valve in an open position.

Referring to the drawings, throughout which like reference numerals designates like parts, the numeral 5 designates an in ternal combustion engine that 1s provided with a carbureter 6 which is connected to vthe cylinders of the engine by a vmanifold inlet lpipe 7, the above mentioned parts being of the usual' type and being shown merely to illustrate a convenient location for the installation of my air inl'et valve.

The air inlet valve proper comprises an inner pipe Vor tube 8 `that is externally. threaded at one end ,as at 9 so that it mayl 'be screwed into the manifold inlet pipe 7, a

piece of. thin perforated ,metal gauze rolled into cylindrical form and slipped into the 1 end of the tube 8 so that it will projectwiththrough the tube 8 will be `caused to pass through the perforations. in the member l1 and will mix thoroughly with the 4fuel in the inlet'pipe 7.

The outer end of the tube 8 is disposed to telescope within a larger tube 12, the tube 12 being open at its inner end and closed at its outer end, and being provided adjacent its inner end with an elongated slot 13 through which may project a screw 14 that is screwed through the wall of the tube 8, the screw 14 serving as a means to prevent relative turning movement between the two tubes and as a stop to limit the endwise movement of the tube 12 on the tube 8. In practice it is found convenient to have the screw'14 threaded through the wallof the tube 8 on one side and to allow it to strike against the wall of such tubev 8 on the opposite side so that when the screw is tightened it will be frctionally held with sufficient force to prevent it from jarring loose.

The wall of the tube 8 is provided with an air inlet opening 15 and the wall of the tube 12 is provided with a similar air vinlet `opening 16 which normally does not register in the pipe 7 whereby the air that enters I other end of which abuts against a movableV plate 18 that is heldin an adjusted position by a screw 19 that passes through the end of the outertube 12, a lock nut 20 being provided for the purpose of locking the screw 19 in any desired position.

The tube 8 is provided adjacent its inner end with an lupwardly directed branch 21'. hereinshown to b e integral therewith but which if ,desired may be in the form of a separate shaped fitting. The branch 21 is provided at some suitable point throughout its length with alshut off valve 22 and is adapted to be connected at apoint beyond` ythe valve 22 with any suitable receptacle, not shown, that may contain liquid fuel, as

gasolene for the purpose of priming or such valve.

" fol lowin startingthe engine with which this air inlet valve is connected. The branch 21 is particularly advantageous for admitting gas for priming and starting the engine in 1nstances' where lower grade oil as distillate or kerosene -is usedfor fuel.

lVhen this device is installed fore described and the engine 5 is started a partial vacuum .Will cause the outer tube 12 -to'be drawn inwardly into a position approximately as shown in Fig. 3 so that the openings 15 and 16 will register and air will be admitted therethrough .to `mix with the fuel just prior to the entrance of such fuel into the cylinders of the engine.

The adjustment screw 19 makes it possible to vary'the tension ofthespring 17 so v that the valve will be opened by any degree of vacuum that it is desired to have operate Obviously changes in the precise form of constructlon and arrangements of the various parts of this auxiliary air inlet valve may be resorted to within the scope of the claims. What claim is: 4 1. A valve' of the class described comprising a smaller tube open at both ends and having a perfor-ation in the wall thereof, a larger tube open at one vend and closed at lthe opposite end and disposed to fit snugly over saidsmaller tube said larger tube havas hereinbeing a perforation-v in the .Wall thereof-that is adapted to register' with the perforation in said smaller-tube when said larger tube l is moved by suction exerted 'through said smaller tube, and said larger tube having a longitudinally extending slot in lthe Wall:

thereof, a piny secured to said smaller tube and projecting outwardly through sa1d slot to prevent relative turning movement betiveen sai-d two tubes and to limit the longitudinal movement .of said. larger tubeon said smaller tube, a compression spring interposed between said two tubes to hold said l tubes in such relative position that said perforations will not register when no .suction is exerted through said' smaller tube and means for adjusting said spring to vary the y force of compression-thereof.

2. A valve of the class described comprisinga smaller tube open at both ends and having a perforation in the wall thereof, a

perforated metal gauze projecting from one` end of saidsmaller tube, a valve controlled inlet pipe connected with said smaller tube, a larger t'ube open at one end and closed at the opposite end and disposed to fit snugly over said smaller tube said larger tube having a perforation in the wall thereof that is adapted to register with the perforation in said smaller tube when said larger tube is moved by suction exerted through said smaller tube, and said larger tube having a longitudinally extending slot in the wall thereof, a pin secured to said smaller tube and projecting outwardly through said sloty 'ALBERT J. RICHARDS. 

